linux-kernel - [PATCHv3 7/8] extcon: palmas: Use devm_extcon_dev

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Date:	Fri, 18 Apr 2014 09:32:39 +0900
From:	Sangjung Woo <sangjung.woo@...sung.com>
To:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	linux-kernel@...r.kernel.org,
	Sangjung Woo <sangjung.woo@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Seung-Woo Kim <sw0312.kim@...sung.com>
Subject: [PATCHv3 7/8] extcon: palmas: Use devm_extcon_dev_register()

Use the resource-managed extcon device register function (i.e.
devm_extcon_dev_register()) instead of extcon_dev_register(). If extcon device
is attached with this function, that extcon device is automatically unregistered
on driver detach. That reduces tiresome managing code.

Signed-off-by: Sangjung Woo <sangjung.woo@...sung.com>
---
 drivers/extcon/extcon-palmas.c |   15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 51db5bc..1a770e0 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -192,7 +192,7 @@ static int palmas_usb_probe(struct platform_device *pdev)
 	palmas_usb->edev.name = kstrdup(node->name, GFP_KERNEL);
 	palmas_usb->edev.mutually_exclusive = mutually_exclusive;
 
-	status = extcon_dev_register(&palmas_usb->edev);
+	status = devm_extcon_dev_register(&pdev->dev, &palmas_usb->edev);
 	if (status) {
 		dev_err(&pdev->dev, "failed to register extcon device\n");
 		kfree(palmas_usb->edev.name);
@@ -209,7 +209,8 @@ static int palmas_usb_probe(struct platform_device *pdev)
 		if (status < 0) {
 			dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
 					palmas_usb->id_irq, status);
-			goto fail_extcon;
+			kfree(palmas_usb->edev.name);
+			return status;
 		}
 	}
 
@@ -223,26 +224,20 @@ static int palmas_usb_probe(struct platform_device *pdev)
 		if (status < 0) {
 			dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
 					palmas_usb->vbus_irq, status);
-			goto fail_extcon;
+			kfree(palmas_usb->edev.name);
+			return status;
 		}
 	}
 
 	palmas_enable_irq(palmas_usb);
 	device_set_wakeup_capable(&pdev->dev, true);
 	return 0;
-
-fail_extcon:
-	extcon_dev_unregister(&palmas_usb->edev);
-	kfree(palmas_usb->edev.name);
-
-	return status;
 }
 
 static int palmas_usb_remove(struct platform_device *pdev)
 {
 	struct palmas_usb *palmas_usb = platform_get_drvdata(pdev);
 
-	extcon_dev_unregister(&palmas_usb->edev);
 	kfree(palmas_usb->edev.name);
 
 	return 0;
-- 
1.7.9.5

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